2729 Horse Pen Creek Road, Suite 105, Greensboro, NC 27410

CPAP Compliance: Understanding the 4-Hour Rule  

June 13, 2025

Woman sleeping in bed with CPAP machine

Have you recently started sleeping with a CPAP machine? This device can help address your sleep apnea and let you enjoy more restful nights again – but only if you’re using it as often as you should. Good patient compliance is essential for a successful CPAP treatment. To be compliant, you need to follow the 4-hour rule; below is a closer look at what this means.

How Does CPAP Treatment Work?

Sleep apnea is usually caused by obstructions of the airway. If the muscles and tissues near the back of your throat become overly relaxed while you’re asleep, they can block the flow of air, leading to pauses in your breathing. The purpose of CPAP treatment is to prevent this blockage from occurring so that you can continue to breathe easily throughout the night.

So what exactly does the treatment entail? A CPAP machine comes with a special mask that is meant to be worn over the nose. While you’re asleep, the machine delivers a steady stream of pressurized air through the mask. This helps keep the airways clear throughout the night, thus reducing the risk of obstructions that can result in sleep apnea episodes.

What is the 4-Hour Rule for CPAP Compliance?

The 4-hour rule defines how often you need to use your CPAP machine in order to be considered compliant. Put simply, during the first 90 days after you get your CPAP machine, your goal should be to use it for at least 4 hours a night at least 70% of the time within a 30-day period. Doing so can go a long way toward ensuring that you’re getting the most out of the treatment.

Some patients have trouble remembering to use their CPAP machine at first. As such, it may help to set a reminder on your phone. Another option is to create a new nighttime routine that includes your CPAP machine. If you make a point of sticking to this routine, it will eventually turn into a habit.

What are the Benefits of CPAP Treatment?

Becoming CPAP compliant is well worth the effort. The treatment can significantly enhance the quality of your sleep, which can help you feel better rested during your waking hours. On top of that, getting your sleep apnea under control can decrease your risk of suffering from heart problems and other health issues in the long run.

In short, a CPAP machine can be the key to enjoying more restful nights again. By following the 4-hour rule, you ensure that the device is able to do its job, allowing you to reap the full benefits of the treatment.

About the Practice

At SleepMed Solutions, we strive to help each of our patients get the quality sleep that they deserve. When it comes to addressing sleep apnea, we can handle every step of the process, from the initial sleep test to the actual treatment. We offer multiple solutions for sleep-disordered breathing, including CPAP machines and oral appliances. If you think CPAP treatment could help you get a better night’s rest, you can schedule a visit to our office in Greensboro by visiting our website or calling (336) 907-7773.